[单项选择]A light sleeper is usually very ______ to any sound even as inaudible as the humming of a mosquito.
A. acute
B. keen
C. alert
D. immune

[单项选择]

The security rationale is very important for any scientific or technological endeavor because the budget of security- related programs is limited usually by that nation's comprehension of a hazard or redefine the idea of national security.（）

A. perception
B. reason
C. passion
D. reaction

[单项选择]The ability ______ is very important for any speaker.
A. to hear clearly
B. to be clearly heard
C. to hearing clearly
D. to being clearly heard

[单项选择]We have to think very carefully before we take any action, because it's a very ______ situation we are in.
A. ideal
B. favourable
C. good
D. severe

[单项选择]In the sentence "In spoken languages units of sound and meaning are combined sequentially.", the word "sequentially" can be replaced by_____.
A. separately
B. together
C. consequently
D. subsequently

[单项选择]A technician installs a new sound card but no sound can be heard. Which of the following utilities can be used to see an error?（）
A. MSCONFIG
B. Device Manager
C. DXDIAG
D. REGEDIT

[单项选择]My mother is a light sleeper, ______ to any sound even as low as the humming of a mosquito
A. alert
B. acute
C. keen
D. immune

[单项选择]Some plants are very_______to light；they perfer the shade．
A. sensible
B. flexible
C. objective
D. sensitive

[单项选择]Some plants are very ________ to light; they prefer the shade.
A. sensible
B. flexible
C. objective
D. sensitive

[单项选择]

Text 3
During the whole of a dull, dark and soundless day in the, autumn of the year, when the clouds hung oppressively low in the heavens, had been passing alone, on horseback, through a singularly dreary tract of country, and at length found myself, as the shades of the evening drew on, within view of the melancholy House of Usher. Thus Edgar Allan Poe opened his story of the fall of the House of Usher in 1839. In this beautifully crafted sentence he captured so much that is essential to the horror story: darkness, ominous solitude, foreboding calm, apprehension and uncertainty, and a deep feeling of melancholy that could soon turn to fear.
Many kinds of fiction are self – explanatory: mysteries, Westerns, love stories, spy thrillers, and science fiction define themselves by the terms used to name them. The horror story is less easily defined, perhaps because other types of fiction so often use the trappings of terror to enhance their plots. Charles
A. they are easy to understand
B. they are meant for ordinary readers
C. they often use horror to develop their plots
D. their categories show what they are about